package com.ruoyi.web.controller.common;

import com.ruoyi.common.annotation.Log;
import com.ruoyi.common.config.RuoYiConfig;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.framework.config.ServerConfig;
import com.ruoyi.framework.file.FileInfoFactory;
import com.ruoyi.system.domain.SysFileEntity;
import com.ruoyi.system.service.ISysFileService;
import io.swagger.annotations.ApiOperation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.repository.query.Param;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 通用请求处理
 *
 * @author ruoyi
 */
@RestController
public class CommonController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;
    @Autowired
    private ISysFileService fileService;

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("common/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求
     */
    @PostMapping("/common/upload")
    @Log(title = "通用文件管理")
    @ApiOperation("上传文件")
    public AjaxResult uploadFile(MultipartFile file, @Param("secretFlag") char secretFlag) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            SysFileEntity sysFileInfo = FileInfoFactory.createSysFileInfo(file, filePath, secretFlag);
            fileService.save(sysFileInfo);
            return getAjaxResult(sysFileInfo);
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    private AjaxResult getAjaxResult(SysFileEntity sysFileInfo) {
        if (sysFileInfo.getFileId() < 1) {
            return AjaxResult.error("上传失败");
        }
        String url = serverConfig.getUrl() + sysFileInfo.getFileOriginName();
        AjaxResult ajax = AjaxResult.success();
        ajax.put("fileName", sysFileInfo.getFileOriginName());
        ajax.put("url", url);
        return ajax;
    }

    /**
     * 通用上传图片请求
     */
    @PostMapping("/common/uploadImg")
    @Log(title = "通用上传图片")
    @ApiOperation("上传图片")
    public AjaxResult uploadFileImg(MultipartFile file) throws Exception {
        try {
            String originalFilename = file.getOriginalFilename();
            String end = originalFilename.substring(originalFilename.lastIndexOf("." + 1));
            if (!RuoYiConfig.getAllowImgSuffix().contains(end)) {
                return AjaxResult.error("图片格式不正确");
            }
            // 上传文件路径
            String filePath = RuoYiConfig.getImgPath();
            SysFileEntity sysFileInfo = FileInfoFactory.createSysFileInfo(file, filePath, 'N');
            fileService.save(sysFileInfo);
            return getAjaxResult(sysFileInfo);
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/common/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }
}
